Lee began his basketball career playing for the
University of Portland in the 1998–1999 season, appearing in eight games and scoring an average of 1 points. He transferred to
Seattle Pacific University in 2000. After his graduation, he went on to play on professional teams in
Luxembourg and
Germany before coming to
South Korea in 2006. Nevertheless, Lee stated that he relished the opportunity to live in the country and learn more about his roots. On 21 November 2016, it was announced that Lee would serve as one of two
Alab Pilipinas' world imports together with his brother
Lee Seung-jun. On December 2016, the Lee Dong-jun alongside his brother was removed from the team due to inadequate performance. ==Personal life==